How to split text by lines

Question

Flex 3.

I created a TextArea object. Then I typed some text in it. Then i got this text useing TextArea.text property.

How can I split text I got by lines and convert it to the array of strings?

Answer 1

What does "split by lines" mean to you? The usual thing is to scan the text for the last blank before textwidth, and call that a line.

Answer 2

According to this site, the character for a line feed feed is "\n". Using the Split() function with "\n" you should be able to split the string into an array of string separated by line feeds.

Answer 3

If "\n" doesn't work for you, try "\r" (carriage return). Here's some code demonstrating how it'd work -- just type into the box and you'll see the array contents change:

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="onCreationComplete(event)">

    <mx:Script>
     <![CDATA[

      import mx.events.CollectionEvent;
      import mx.collections.ArrayCollection;
      import mx.events.FlexEvent;

      [Bindable]
      private var ac:ArrayCollection;

      protected function onCreationComplete(event:FlexEvent):void
      {
       ac = new ArrayCollection();
       ac.addEventListener(CollectionEvent.COLLECTION_CHANGE, onCollectionChange);  
      }

      protected function onKeyUp(event:KeyboardEvent):void
      {
       ac.source = event.target.text.split("\r");
      }

      protected function onCollectionChange(event:CollectionEvent):void
      {
       contents.text = ac.source.join("\r");   
      }

     ]]>
    </mx:Script>

    <mx:TextArea id="input" x="19" y="22" width="273" height="175" keyUp="onKeyUp(event)" />
    <mx:TextArea id="contents" x="112" y="249" width="180" height="175" editable="false" />
    <mx:Label x="19" y="222" text="Array Length:" fontWeight="bold" />
    <mx:Label x="37" y="250" text="Contents:" fontWeight="bold" />
    <mx:Label x="111" y="222" text="{ac.length}" />

</mx:Application>

Hope it helps!